Add support for Embedded column name

[maphe]

Is your feature request related to a problem? Please describe.
Currently it is possible to define the name of a column to be different from the name of the ts/js field

  @Property({ name: 'n' })
  name!: string;

It is also possible to define an embedded object

  @Embedded(() => Profile, { object: true, nullable: true })
  profile?: Profile;

but it doesn't seem to be possible to combine both

Describe the solution you'd like
Would be nice to be able to do something like

  @Embedded(() => Profile, { object: true, nullable: true, name: 'p' })
  profile?: Profile;

Describe alternatives you've considered
The only alternative is to have the attribute name match the db name.

Additional context
This might be more of a mongoDB use case where nested objects are fairly common and it's not unusual to shorten the db field name for storage optimization, but still want the application name to be verbose to keep the code understandable.

But Im sure it can also have some SQL use cases...

[B4nan]

Hmm I would say this should be already working.

[maphe]

Maybe I'm not looking at the right place but this is the definition for EmbeddedOptions:

export type EmbeddedOptions = {
    entity?: string | (() => AnyEntity | AnyEntity[]);
    type?: string;
    prefix?: string | boolean;
    nullable?: boolean;
    object?: boolean;
    array?: boolean;
    hidden?: boolean;
    serializer?: (value: any) => any;
    serializedName?: string;
};

in node_modules/@mikro-orm/core/decorators/Embedded.d.ts (I'm using "@mikro-orm/core": "^6.1.11").

It doesn't seem to have a name property available.

[B4nan]

Ok, but that might be just a type-level issue, have you tried to put it in (and cast the options as any)?

[maphe]

I just gave it a try.

On insert, it skips the field, meaning the document created in mongoDB doesn't have the data, neither with the class attribute name nor the decorator config name.

On select, it throws an error TypeError: Cannot read properties of undefined (reading 'object') (at node_modules/@mikro-orm/core/utils/EntityComparator.js:266:88).

[RossComputerGuy]

@maphe I got the same error as well but with node_modules/@mikro-orm/core/metadata/MetadataValidator.js:17